Sanford Health Plan is transitioning, effective Jan. 1, 2026, to a new vendor platform for claims and administrative service for Medicare Advantage (MA) lines of business, including Align powered by Sanford Health Plan (MA, MAPD), Align DUALPartnership (D-SNP) and Great Plains Medicare Advantage (GPMA, I-SNP). 

Request access to the new portal

This transition is part of our work to insource the Medicare Advantage administrative operations previously managed by vendor partners, allowing us to offer a more customized, responsive member and provider experience.

A detailed FAQ is now available. These are the key things to know about the upcoming transition:

• Continue to submit electronic claims as usual, using the existing payor ID (RP035). The electronic claims submission process and the payor ID are not changing. Availity will route claims to the appropriate platform based on date of service. 
• While electronic claims submission is preferred, paper claims can be submitted as follows based on date of service: 
  

  PRIOR to Jan.1, 2026	ON and AFTER Jan.1, 2026
  Sanford Health Plan PO Box 31041 Tampa, FL 33631-3041	Sanford Health Plan Attn: Claims P.O. Box 8000 Marshfield, WI 54449 Fax: (715) 221-9874

• Electronic remittances and electronic fund payments will continue to be available through Zelis.
• Customer service numbers for providers and members are being updated by date of service as follows:
  

  PLAN	PRIOR to Jan.1, 2026	ON and AFTER Jan.1, 2026
  Align powered by Sanford Health Plan (MA, MAPD) Align DUAL Partnership (D-SNP)	(888) 278-6485	(877) 509-4979
  Great Plains Medicare Advantage (GPMA, I-SNP)	(844) 637-4760	(877) 492-5189

• Medicare Advantage members will receive updated ID cards for plan year 2026. Please update your patient records with the information from the new cards.